/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/AbilitySystemComponent.h
Called when an ability is cancellable or not. Doesn't do anything by default, can be overridden to tie into gameplay events
virtual void HandleChangeAbilityCanBeCanceled ( const [FGameplayTagContainer](API\Runtime\GameplayTags\FGameplayTagContainer) & AbilityTags, [UGameplayAbility](API\Plugins\GameplayAbilities\Abilities\UGameplayAbility) * RequestingAbility, bool bCanBeCanceled )